Webster's Revised Unabridged Dictionary · 1913

Attend

Attend ({not transcribed}) , transitive verb

[Old English atenden, Old French atendre, French attendre, to expect, to wait, from Latin attendre to stretch, (sc. animum), to apply the mind to; ad + tendere to stretch. See Tend.]

1.
To direct the attention to; to fix the mind upon; to give heed to; to regard. [Obsolete]
The diligent pilot in a dangerous tempest doth not attend the unskillful words of the passenger. — Sir P. Sidney
2.
To care for; to look after; to take charge of; to watch over.
3.
To go or stay with, as a companion, nurse, or servant; to visit professionally, as a physician; to accompany or follow in order to do service; to escort; to wait on; to serve.
The fifth had charge sick persons to attend. — Spenser
Attends the emperor in his royal court. — Shakespeare
With a sore heart and a gloomy brow, he prepared to attend William thither. — Macaulay
4.
To be present with; to accompany; to be united or consequent to; as, a measure attended with ill effects.
What cares must then attend the toiling swain. — Dryden
5.
To be present at; as, to attend church, school, a concert, a business meeting.
6.
To wait for; to await; to remain, abide, or be in store for. [Obsolete]
The state that attends all men after this. — Locke
Three days I promised to attend my doom. — Dryden

Attend ({not transcribed}) , intransitive verb

1.
To apply the mind, or pay attention, with a view to perceive, understand, or comply; to pay regard; to heed; to listen; -- usually followed by to.
Attend to the voice of my supplications. — Bible (KJV) - Psalm lxxxvi. 6
Man can not at the same time attend to two objects. — Jer. Taylor
2.
To accompany or be present or near at hand, in pursuance of duty; to be ready for service; to wait or be in waiting; -- often followed by on or upon.
He was required to attend upon the committee. — Clarendon
3.
(with to) To take charge of; to look after; as, to attend to a matter of business.
4.
To wait; to stay; to delay. [Obsolete]
For this perfection she must yet attend, Till to her Maker she espoused be. — Sir J. Davies